This incubator has an adjustable digital thermostat to control the temperature with a push of a button. The LCD will display set temp, actual temp and humidity percentage in both Fahrenheit and Celsius. The pre-set microprocessor based thermostat digitally regulates itself. It comes preset for bird eggs, so you only need to turn it on and add water. Without an automatic turner in place, the incubator will hold 50 duck or chicken eggs or 130 quail eggs. With a turner the chicken racks will hold 42 eggs from partridge to duck egg size or with the quail racks it will hold 120 quail eggs. 12 V. DC power supply operates on 100 to 240 volt AC and is shipped w/ U.S. plug & cord set for 110 outlet. Use in room w/ stable temperature 68-78 F. TUV listed, 25 Watt.